<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>404</title>
</head>
<style>
    body {background-color: gainsboro;font-family: Lucida Console, Monaco, Courier New, mono, monospace;}
    h2 {text-align: center; margin-top: 100px;  }
    img {display: block;margin-left: auto;margin-right: auto;}
</style>
<body>
    <h2>页面君去火星旅游了！</h2>
    <img src="../img/404.jpg" width="400" height="400"/>
</body>
</html>